simplify host checks

This commit is contained in:
Jeffrey Morgan 2024-03-08 23:29:53 -08:00
parent 5c143af726
commit bfec2c6e10

View file

@ -906,7 +906,7 @@ var defaultAllowOrigins = []string{
}
func allowedHost(host string) bool {
if host == "" || host == "localhost" {
if host == "" || host == "localhost" || host == "0.0.0.0" {
return true
}
@ -920,18 +920,14 @@ func allowedHost(host string) bool {
"internal",
}
// check if the host is a local TLD
for _, tld := range tlds {
if strings.HasSuffix(host, "."+tld) {
return true
}
}
return false
}
func ips() []string {
var ips []string
// check if the host is a local IP address
if interfaces, err := net.Interfaces(); err == nil {
for _, iface := range interfaces {
addrs, err := iface.Addrs()
@ -941,13 +937,15 @@ func ips() []string {
for _, a := range addrs {
if ip, _, err := net.ParseCIDR(a.String()); err == nil {
ips = append(ips, ip.String())
if host == ip.String() {
return true
}
}
}
}
}
return ips
return false
}
func allowedHostsMiddleware(addr net.Addr) gin.HandlerFunc {
@ -969,7 +967,7 @@ func allowedHostsMiddleware(addr net.Addr) gin.HandlerFunc {
}
if addr, err := netip.ParseAddr(host); err == nil {
if addr.IsLoopback() || addr.IsPrivate() || slices.Contains(ips(), host) || addr.String() == "0.0.0.0" {
if addr.IsLoopback() || addr.IsPrivate() {
c.Next()
return
}